linux-kernel - [PATCH 3.13.y-ckt 043/103] ARM: clk-imx6q: fix video divider for rev T0 1.0

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Date:	Wed, 18 Feb 2015 16:32:10 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Gary Bisson <bisson.gary@...il.com>,
	Shawn Guo <shawn.guo@...aro.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 043/103] ARM: clk-imx6q: fix video divider for rev T0 1.0

3.13.11-ckt16 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gary Bisson <bisson.gary@...il.com>

commit 81ef447950bf0955aca46f4a7617d8ce435cf0ce upstream.

The post dividers do not work on i.MX6Q rev T0 1.0 so they must be fixed
to 1. As the table index was wrong, a divider a of 4 could still be
requested which implied the clock not to be set properly. This is the
root cause of the HDMI not working at high resolution on rev T0 1.0 of
the SoC.

Signed-off-by: Gary Bisson <bisson.gary@...il.com>
Signed-off-by: Shawn Guo <shawn.guo@...aro.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/arm/mach-imx/clk-imx6q.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 6a289bc..d9cf94a 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -161,7 +161,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
 		post_div_table[1].div = 1;
 		post_div_table[2].div = 1;
 		video_div_table[1].div = 1;
-		video_div_table[2].div = 1;
+		video_div_table[3].div = 1;
 	};
 
 	/*                   type                               name         parent_name  base     div_mask */
-- 
1.9.1

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